Kenne Bell Mammoth Two Valve Six Rib Blower

Mammoth Two-Valve kits come with a six-rib blower drive as stock, with an eight-rib kit optional for those operating in the 20 pounds and higher range. The two AN fittings at left denote this is a Liquid Cooled supercharger, and thus a 2.8-liter. The Liquid Cooling keeps temperatures more even from one end of the rotors to the other, something worth thinking about at high boost outputs, but not a factor in street driving.